Home / 19,868.18-27,418.66-10,915.62

Finding the Fourth Proportional to 19,868.18, 27,418.66 and 10,915.62

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Solution

The fourth proportional to 19,868.18, 27,418.66 and 10,915.62 is: 15,063.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,868.18 : 27,418.66 = 10,915.62 : x
  2. Step 2: Convert to fraction form
    19,868.18/27,418.66 = 10,915.62/x
  3. Step 3: Cross multiply
    19,868.18x = 27,418.66 × 10,915.62
  4. Step 4: Simplify right side
    19,868.18x = 299,291,673.47
  5. Step 5: Solve for x
    x = 299,291,673.47/19,868.18
  6. Step 6: Final answer
    x = 15,063.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.